一个简单的底部弹窗的实现

最新推荐文章于 2024-03-18 09:20:44 发布

原创最新推荐文章于 2024-03-18 09:20:44 发布 · 1.9k 阅读

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本文介绍了一个在Android应用中实现底部弹窗的简单方法，提供了源代码链接及关键类`SelectPicPopupWindow.java`的示例，适用于开发者快速了解和参考。

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这里写图片描述

源代码地址：https://github.com/luoye123/Box

东西很简单，我就之间亮代码了：
1、activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:gravity="center"
    android:id="@+id/ll_image">

    <Button
        android:id="@+id/bt_select_image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="选择图片" />
</LinearLayout>

2、MainActivity.java

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private SelectPicPopupWindow menuWindow;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewById(R.id.bt_select_image).setOnClickListener(this);
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.bt_select_image:
                //TODO implement
                selectImgs();
        }
    }
    private void selectImgs(){

        menuWindow = new SelectPicPopupWindow(MainActivity.this, itemsOnClick);
        //设置弹窗位置
        menuWindow.showAtLocation(MainActivity.this.findViewById(R.id.ll_image), Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 0);
    }

    private View.OnClickListener itemsOnClick = new View.OnClickListener() {
        public void onClick(View v) {
            menuWindow.dismiss();
            switch (v.getId()) {
                case R.id.item_popupwindows_camera:        //点击拍照按钮

                    break;
                case R.id.item_popupwindows_Photo:       //点击从相册中选择按钮


                    break;
                default:
                    break;
            }
        }

    };
}

3、关键代码：SelectPicPopupWindow.java

            **public class SelectPicPopupWindow extends PopupWindow {

            private Button item_popupwindows_camera,    //弹窗拍照按钮
                    item_popupwindows_Photo,            //弹窗从相册选择按钮
                    item_popupwindows_cancel;           //弹窗取消按钮
            private View menuview;

            /**
             * 上传图片*************************
             * @param context
             * @param itemsOnclick
             */
            public SelectPicPopupWindow(Activity context, View.OnClickListener itemsOnclick){
                super(context);
                LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                menuview = inflater.inflate(R.layout.item_popupwindows,null);
                item_popupwindows_camera = (Button) menuview.findViewById(R.id.item_popupwindows_camera);   //拍照按钮
                item_popupwindows_cancel = (Button) menuview.findViewById(R.id.item_popupwindows_cancel);   //取消按钮
                item_**popupwindows_Photo = (Button) menuview.findViewById(R.id.item_popupwindows_Photo);     //图库按钮

                /**
                 * 取消按钮销毁事件
                 */
                item_popupwindows_cancel.setOnClickListener(new View.OnClickListener() {
                    public void onClick(View view) {
                        dismiss();
                    }
                });
                item_popupwindows_camera.setOnClickListener(itemsOnclick);
                item_popupwindows_Photo.setOnClickListener(itemsOnclick);
                //设置SelectPicPopupWindow的View
                this.setContentView(menuview);
                //设置SelectPicPopupWindow**弹出窗体的宽
                this.setWidth(ViewGroup.LayoutParams.FILL_PARENT);
                //设置SelectPicPopupWindow弹出窗体的高
                //修改高度显示，解决被手机底部虚拟键挡住的问题  by黄海杰 at:2015-4-30
                this.setHeight(ViewGroup.LayoutParams.MATCH_PARENT);
                //设置SelectPicPopupWindow弹出窗体可点击
                this.setFocusable(true);
                //设置SelectPicPopupWindow弹出窗体动画效果
                //this.setAnimationStyle(R.style);
                //实例化一个ColorDrawable颜色为半透明
                ColorDrawable dw = new ColorDrawable(0xb0000000);
                //设置SelectPicPopupWindow弹出窗体的背景
                this.setBackgroundDrawable(dw);
                //menuview添加ontouchlistener监听判断获取触屏位置如果在选择框外面则销毁弹出框
                menuview.setOnTouchListener(new View.OnTouchListener() {
                    public boolean onTouch(View view, MotionEvent motionEvent) {
                        int height = menuview.findViewById(R.id.ll_popup).getTop();
                        int y = (int) motionEvent.getY();
                        if (motionEvent.getAction() == MotionEvent.ACTION_UP){
                            if (y<height){
                                dismiss();
                            }
                        }
                        return true;
                    }
                });
            }
        }**

写的不好，请见谅，，下一期完成后期的工作！！！